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Finding the Fourth Proportional to 193,325.20, 289,987.80 and 100,013.20

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Solution

The fourth proportional to 193,325.20, 289,987.80 and 100,013.20 is: 150,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,325.20 : 289,987.80 = 100,013.20 : x
  2. Step 2: Convert to fraction form
    193,325.20/289,987.80 = 100,013.20/x
  3. Step 3: Cross multiply
    193,325.20x = 289,987.80 × 100,013.20
  4. Step 4: Simplify right side
    193,325.20x = 29,002,607,838.96
  5. Step 5: Solve for x
    x = 29,002,607,838.96/193,325.20
  6. Step 6: Final answer
    x = 150,019.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.